Papers

Peer-reviewed Open access
Jan 1, 2016

Studies of print-through and reflectivity of x-ray mirrors using thin carbon-fiber-reinforced plastic

Journal of Astronomical Telescopes, Instruments, and Systems
  • Satoshi Sugita
  • Hisamitsu Awaki
  • Kenya Yoshioka
  • Keiji Ogi
  • Hideyo Kunieda
  • Hironori Matsumoto
  • Takuya Miyazawa
  • Ikuyuki Mitsuishi
  • Toshihiro Iwase
  • Shigetaka Saji
  • Sasagu Tachibana
  • Masato Maejima
  • Shun Yoshikawa
  • Naoki Shima
  • Takashi Ishikawa
  • Takayoshi Hamada
  • Naoki Ishida
  • Hiromichi Akiyama
  • Kazuaki Kishimoto
  • Shin Utsunomiya
  • Tomohiro Kamiya
  • Kentaro Uesugi
  • Yoshio Suzuki
  • Display all

Volume
2
Number
1
First page
id. 014002
Last page
Language
Publishing type
Research paper (scientific journal)
DOI
10.1117/1.JATIS.2.1.014002

© The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. We fabricated x-ray mirrors from carbon-fiber-reinforced plastic with a tightly nested design for x-ray satellites, using a replication method for the surfaces. We studied the effects of print-through on the mirror surface as a function of curing temperature. With room temperature curing, the root-mean-square value of the surface error was 0.8 nm. The reflectivity was measured using 8-keV x-rays, and the roughness was calculated as 0.5 nm by model fitting - comparable to that of the ASTRO-H/HXT mirror. We verified the long-term stability of the mirror surface over 6 months. We fabricated Wolter type-I quadrant-shell mirrors with a diameter of 200 mm and performed x-ray measurements at BL20B2 in the SPring-8 synchrotron radiation facility. We obtained reflection images of the mirrors using a 20-keV x-ray spot beam with a slit size of 10 x 1 mm in the radial and circumferential directions, respectively. The averaged half-power diameter (HPD) of the images in one mirror was 1.2 arc min in the circumferential center of the mirror and 3.0 arc min at the edge. In the spot images with a smaller slit size of 10 x 0.2 mm, we achieved an HPD of 0.38 arc min in the best case.

Link information
DOI
https://doi.org/10.1117/1.JATIS.2.1.014002
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84955085861&origin=inward Open access
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=84955085861&origin=inward
ID information
  • DOI : 10.1117/1.JATIS.2.1.014002
  • ISSN : 2329-4124
  • eISSN : 2329-4221
  • SCOPUS ID : 84955085861

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